-ic a-a a-b a-c a-i a-t aaa aab aac aai aao aas aat aav ab- aba abb abc abi abo abs abt abv ac- aca acb acc aci aco acs act acv ai- aia aib aic aii aio ais ait aiv aoa aob aoc aoi aoo aos aot aov as- asa asb asc asi aso ass ast asv at- ata atb atc ati ato ats att atv av- ava avb avc avi avo avs avt baa bab bac bai bao bas bat bav bba bbb bbc bbi bbo bbs bbt bca bcb bcc bci bco bcs bct bcv bi- bia bib bic bii bio bis bit biv boa bob boc boi boo bos bot bov bsa bsb bsc bsi bso bss bst bsv bta btb btc bti bto bts btt btv bva bvb bvc bvi bvo bvs bvt bvv c-- caa cab cac cai cao cas cat cav cba cbb cbc cbi cbo cbs cbt cbv cca ccb ccc cci cco ccs cct ccv ci- cia cib cic cii cio cis cit civ co- coa cob coc coi coo cos cot cov csa csb csc csi cso css cst csv cta ctb ctc cti cto cts ctt ctv cva cvb cvc cvi cvo cvs cvt cvv i-v ia- iaa iab iac iai iao ias iat iav iba ibb ibc ibi ibo ibs ibt ibv ica icb icc ici ico ics ict icv iia iib iic iii iio iis iit io- ioa iob ioc ioi ioo ios iot iov is- isa isb isc isi iso iss ist isv ita itb itc iti ito its itt itv iva ivb ivc ivi ivo ivs ivt ivv o-i oaa oab oac oai oao oas oat oav ob- oba obb obc obi obo obs obt obv oc- oca ocb occ oci oco ocs oct ocv oia oib oic oii oio ois oit oiv oo- ooa oob ooc ooi ooo oos oot oov os- osa osb osc osi oso oss ost osv ot- ota otb otc oti oto ots ott otv ov- ova ovb ovc ovi ovo ovs ovv saa sab sac sai sao sas sat sav sba sbb sbc sbi sbo sbs sbt sbv sca scb scc sci sco scs sct scv sia sib sic sii sio sis sit siv soa sob soc soi soo sos sot sov ss- ssa ssb ssc ssi sso sss sst ssv sta stb stc sti sto sts stt stv sva svb svc svi svo svs svt svv taa tab tac tai tao tas tat tav tba tbb tbc tbi tbo tbs tbt tbv tca tcb tcc tci tco tcs tct tcv tia tib tic tii tio tis tit tiv to- toa tob toc toi too tos tot tov tsa tsb tsc tsi tso tss tst tsv tta ttb ttc tti tto tts ttt ttv tva tvb tvc tvi tvo tvs tvt v-a vaa vab vac vai vao vas vat vav vba vbc vbi vbo vbs vbv vca vcc vci vco vcs vct vi- via vib vic vii vio vis vit viv voa vob voc voi voo vos vot vov vsa vsb vsc vsi vso vss vst vsv vta vtb vtc vti vto vts vtt vtv vva vvb vvc vvi vvo vvs vvt vvv